Across
1
Large natural stream of water
4
Height above sea level
5
Area where water covers the soil
9
Narrow sea inlet between cliffs
11
Largest river in South America
Down
2
Landform where river meets the sea
3
Distance north or south of equator
6
Large area covered with trees
7
Vast body of salt water
8
Flat grassland in tropical regions
10
Land surrounded by water